codespan_preprocessed 0.9.0

Beautiful diagnostic reporting for M4 (or cpp) preprocessed text files
Documentation 
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use codespan_reporting::term;
use codespan_reporting::term::termcolor::{ColorChoice, StandardStream};

use codespan_preprocessed::reporting::Diagnostic;
use codespan_preprocessed::PreprocessedFile;

fn main() {
    let file = PreprocessedFile::new(unindent::unindent(
        r#"
                    #line 1 "top_file"
                    a first statement;
                    another one

                    #line 1 "included_file"
                    continue...

                    #line 5
                    another line
                    the last one
            "#,
    ));

    let diagnostic = Diagnostic::note()
        .with_message("this is just an example")
        .with_primary_label(113..117, "do you see that ?")
        .with_secondary_label(21..26, "is it related to this ?");

    // We now set up the writer and configuration, and then finally render the
    // diagnostic to standard error.

    let writer = StandardStream::stderr(ColorChoice::Always);

    term::emit_to_write_style(
        &mut writer.lock(),
        &Default::default(),
        &file,
        &diagnostic.to_diagnostic(&file),
    )
    .expect("can’t write diagnostic");
}